Writing instrument



FIG. 1 is a front view of a writing instrument showing my new design;

FIG. 2 is a side view thereof, which is a mirror image of the oppositeside thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The writing instrument tip depicted by means of broken lines in FIG. 1has been shown for illustrative purposes only and forms no part of theclaimed design.

I claim the ornamental design for a writing instrument, as shown anddescribed.